ES2084182T3 - Procedimiento de medir el ruido en una imagen de video activa. - Google Patents
Procedimiento de medir el ruido en una imagen de video activa.Info
- Publication number
- ES2084182T3 ES2084182T3 ES91917310T ES91917310T ES2084182T3 ES 2084182 T3 ES2084182 T3 ES 2084182T3 ES 91917310 T ES91917310 T ES 91917310T ES 91917310 T ES91917310 T ES 91917310T ES 2084182 T3 ES2084182 T3 ES 2084182T3
- Authority
- ES
- Spain
- Prior art keywords
- value
- video image
- pixel
- calculated
- reference point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title abstract 2
- 201000002531 Karyomegalic interstitial nephritis Diseases 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
LA PRESENTE INVENCION SE REFIERE A UN PROCESO DE MEDICION DEL RUIDO EN UNA IMAGEN DE VIDEO ACTIVA. COMPRENDE LAS SIGUIENTES ETAPAS: DURANTE UN PERIODO DE TRATAMIENTO DADO, PARA CADA PIXEL DE UNA IMAGEN DE VIDEO CONSIDERADO COMO ESTACIONARIO, SE CALCULA LA DIFERENCIA FD ENTRE LA SEÑAL DE VIDEO QUE CORRESPONDE A ESTE PIXEL Y LA SEÑAL DE VIDEO QUE CORRESPONDE AL PIXEL DE IGUAL POSICION ESPACIAL EN UNA IMAGEN PRECEDENTE, SE CALCULA EL CUADRADO DEL VALOR ABSOLUTO DE LA DIFERENCIA DE MANERA A OBTENER UN VALOR FD2, SE AÑADE EL VALOR FD2 A LOS VALORES ANTERIORMENTE OBTENIDOS DE MANERA A FORMAR UN VALOR DE SUMA SUMATRORIO /FD/2, SE EMPIEZAN DE NUEVO LAS OPERACIONES ANTERIORES HASTA QUE EL NUMERO DE PIXELS TRATADOS SEA IGUALA UN VALOR DE UMBRAL DADO NO O HASTA EL FINAL DEL PERIODO DE TRATAMIENTO, AL FINAL DE PERIODO DE TRATAMIENTO, SI EL NUMERO DE PIXELS TRATADOS ES IGUAL AL VALOR DE UMBRAL, SE UTILIZA EL VALOR SUMATORIO/FD/2 PARA DETERMINAR UN PUNTO DE REFERENCIA DANDO UN NUEVO COEFICIENTE DE REDUCCION DE RUIDO KMIN SINO, SE GUARDA EL ANTIGUO PUNTO DE REFERENCIA. LA INVENCION SE APLICA PARTICULARMENTE A LA TELEVISION.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9011986A FR2667475B1 (fr) | 1990-09-28 | 1990-09-28 | Procede de mesure du bruit dans une image video active et dispositif pour la mise en óoeuvre du procede. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2084182T3 true ES2084182T3 (es) | 1996-05-01 |
Family
ID=9400752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES91917310T Expired - Lifetime ES2084182T3 (es) | 1990-09-28 | 1991-09-27 | Procedimiento de medir el ruido en una imagen de video activa. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5394192A (es) |
| EP (1) | EP0550586B1 (es) |
| JP (1) | JPH06501356A (es) |
| DE (1) | DE69117189T2 (es) |
| ES (1) | ES2084182T3 (es) |
| FR (1) | FR2667475B1 (es) |
| WO (1) | WO1992006558A1 (es) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0574635B1 (en) * | 1992-06-16 | 1998-09-16 | THOMSON multimedia | Method and apparatus for dropout detection and compensation |
| DE69523113T2 (de) * | 1994-03-07 | 2002-06-06 | Koninklijke Philips Electronics N.V., Eindhoven | Rauschmessung |
| WO1996015625A1 (en) * | 1994-11-14 | 1996-05-23 | Philips Electronics N.V. | Video signal processing |
| SE511733C2 (sv) * | 1997-04-04 | 1999-11-15 | Limt Technology Ab | Förfarande och anordning för brusreducering |
| US6535254B1 (en) | 1997-10-31 | 2003-03-18 | Pinnacle Systems Inc. | Method and device for noise reduction |
| JP2001215916A (ja) * | 2000-02-03 | 2001-08-10 | Kawasaki Steel Corp | 画像処理装置及び液晶表示装置 |
| US6359658B1 (en) * | 2000-03-06 | 2002-03-19 | Philips Electronics North America Corporation | Subjective noise measurement on active video signal |
| KR100396557B1 (ko) * | 2001-10-11 | 2003-09-02 | 삼성전자주식회사 | 영상 신호의 노이즈 감쇄 방법 및 그 장치 |
| KR100429804B1 (ko) * | 2001-12-29 | 2004-05-03 | 삼성전자주식회사 | 적응적 영상 노이즈 감쇄 장치 및 그 방법 |
| DE10302003B4 (de) * | 2002-02-26 | 2011-06-16 | Thomson Licensing S.A. | Verfahren und Schaltung zur Bestimmung des Rauschanteils in einem Videosignal |
| KR100599133B1 (ko) * | 2004-06-08 | 2006-07-13 | 삼성전자주식회사 | 영상신호의 노이즈 측정장치 및 그 측정방법 |
| KR102551443B1 (ko) * | 2012-05-10 | 2023-07-06 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0004728B1 (en) * | 1978-04-03 | 1982-04-28 | British Broadcasting Corporation | Noise reduction in electrical signals |
| JPS592227B2 (ja) * | 1978-08-21 | 1984-01-17 | 株式会社日立製作所 | 雑音除去方式 |
| US4646138A (en) * | 1985-03-25 | 1987-02-24 | Rca Corporation | Video signal recursive filter with luma/chroma separation |
| US4679086A (en) * | 1986-02-24 | 1987-07-07 | The United States Of America As Represented By The Secretary Of The Air Force | Motion sensitive frame integration |
| US5140424A (en) * | 1987-07-07 | 1992-08-18 | Canon Kabushiki Kaisha | Image signal processing apparatus with noise reduction |
| US5025316A (en) * | 1989-11-06 | 1991-06-18 | North American Philips Corporation | Video noise reduction system with measured noise input |
| JPH0411466A (ja) * | 1990-04-28 | 1992-01-16 | Sony Corp | ノイズリデューサ |
| US5185664A (en) * | 1991-10-31 | 1993-02-09 | North American Philips Corporation | Method and apparatus for combining field and frame recursive noise reduction for video signals |
-
1990
- 1990-09-28 FR FR9011986A patent/FR2667475B1/fr not_active Expired - Lifetime
-
1991
- 1991-09-27 EP EP91917310A patent/EP0550586B1/fr not_active Expired - Lifetime
- 1991-09-27 JP JP3515780A patent/JPH06501356A/ja active Pending
- 1991-09-27 ES ES91917310T patent/ES2084182T3/es not_active Expired - Lifetime
- 1991-09-27 US US08/030,173 patent/US5394192A/en not_active Expired - Fee Related
- 1991-09-27 DE DE69117189T patent/DE69117189T2/de not_active Expired - Fee Related
- 1991-09-27 WO PCT/FR1991/000756 patent/WO1992006558A1/fr active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| FR2667475A1 (fr) | 1992-04-03 |
| DE69117189D1 (de) | 1996-03-28 |
| US5394192A (en) | 1995-02-28 |
| FR2667475B1 (fr) | 1992-10-30 |
| EP0550586A1 (fr) | 1993-07-14 |
| JPH06501356A (ja) | 1994-02-10 |
| WO1992006558A1 (fr) | 1992-04-16 |
| EP0550586B1 (fr) | 1996-02-14 |
| DE69117189T2 (de) | 1996-07-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG2A | Definitive protection |
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